Iprovement in steam or hot-air pipes



Ae. T. CRANE.

Steam Heater.

APaltentedAug. 12. 1862.

M W Lf.

N. PETERS. Pham-Lnnngnpher. wamngxnn. D. c

PATENT OFFICE;

R. T. CRANE, OF CHICAGO', ILLINOIS.

lVlPROVEMENT IN STEAM OR HOT-AIR PIPES.

Specication forming part of Letters Patent No. 36,141, dated August l2,1862.

To all whom it may concern:

Be it known that I, R. T. CRANE, of Chicago,

in the county of Cook and State of Illinois,

have invented a new and Improved TfConnection for Heating-Pipes; and Ido hereby declare that the following is afull, clear, and exactdescription of the same, reference being had to the accompanyingdrawing, making a .part of this specication, said drawing representing alongitudinal vertical section ot' my invention. y

The object of this invention is to arrange the pipes which are used forheating buildings or rooms by steamor hot air in such a manner that thesteam or hot air can be passed through one or more of said heating-tubesand the heat regulated in a simple, cheap, and expeditious manner.

This invention consists inthe arrangement of one or more partitionsbetween the ends of the heating-tubes,in combination with two or moreinlets and two or more outlets, in such a manner that the steam or hotair admitted through either inlet passes through a portion of the pipesonly, and that by these meansa portion of said pipes can be heated whilethe rest remain cold, and that the heat radiating from.

the heater can be regulated at pleasure.

To enable those skilled in the art to make and use my invention,I willproceed to describe its construction and operation with reference to thedrawing.

A A representaseries of heating' pipes, the ends of which are insertedinto T-connections B B', similar to pipes and connections used forsteamheaters of the ordinary construction.

With ordinary heaters the steam or hot air is admitted to theT-connection at one end and out through the T-connection at the oppositeend of the heating-pipes, and in order to pass from the inlet to theoutlet opening said steam or hot air has .to pass through all the pipes,and consequently the heat which is transferred from the steam or hot airto the pipes radiates with equal force from the surfaces of all thepipes. By this arrangement the temperature in the room or building to beheated cannot be regulated. The steam or hot air can either be admitted0r cut oft, and when admitted the temperature of the pipes will risesooner or later to a degree nearly equal to that of the Steam or hotair, and. the heat in the room or building becomes oppressive on mild orcom'- paratively mild days, and if the heat is cut off all the pipesbecome cold and the temperature in the room or building is reducednearly to that of the outside atmosphere. cases, therefore, it will betoo hot when steam or hot air is admitted to the'heater and too cold ifthe steam or air is cut oft. This difficulty I have obviated by means ofone or more partitions, a a', which are inserted into the T- connectionsB B between the ends of adj oining pipes, as clearly shown in thedrawing, and the inner space of said connection is thereby divided intwo (or more) compartments, b cb c. The lower compartment, c, of theT-connection B communicates with the steam or hotai'r pipe through theinlet-opening d, and the upper compartment, b', ofthe T-connection Bcommunicates with the discharge-pipe through the eXhaust-opening d. AThecompartments b and c are provided with openings e e', and the opening eadmits steam or hot airinto the upper tier of heatingpi pes, A, whereasthe opening e serves to discharge the steam or hot air from the lowertier of pipes, A. The pipes .leading to and from the openings d d e eare provided with suitable stop-cocks, so that the steam or hotV air canbe admitted into either one of the compartments b c and discharged fromthe corresponding compartment, b or c', as may be desired. If it isdesired to use the lower tier of pipes, A,alone,the steam or hot air isadmitted into the compartment c, and thence hit passes through the pipesA to the compartment c and dischargeopening e.

If it is desired to use the upper tier of pipes, steam or hot air isadmitted to the compartment b, from which it passes through thepipes Ato the compartment b and out at the discharge-opening d. It needs nofurther explanation to show how steam can be admitted to bothcompartments b o and through all the pipes A A whenever it is desirabletoobtain .the full heating power of the apparatus.

By increasing the number of partitions between the ends of heating-pipesand providing a corresponding number of inlet and outlet openings thepipes can be divided into as many tiers as may be desired, and the heatemitted from the heater canbe regulated at pleasure.

It remains to remark that` the T-connections In many,

B B', with the partitions a a', may be cast each in one or in severalseparate pieces.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, s

The arrangement of one or more partitions, a a', in the interior of theT-conneetions B B and between the ends of heating-pipes A A',

in oonnbination with inletopenings d e and outlet-openings d e',substantially as and for the purpose shown and described.

R. T. CRANE.

Witnesses:

A. D. STURTEVANT, Si. D. STURTEVANT.

